1 Malaria is a disease caused by a eukaryotic parasite.
(a) State two features of the malarial parasite that indicate that it is not a prokaryote.
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(b) In a piece of word-processed homework, a student stated that one species of parasite that
causes malaria is called:
Plasmodium Vivax
State one error made by the student.
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(c) The malarial parasite is carried by an insect, the female Anopheles mosquito.
(i) Describe how the mosquito transmits the malarial parasite to a human.
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PhysicsAndMathsTutor.com
, (ii) In order to fight the spread of malaria, insecticides have been used in areas where the
Anopheles mosquito breeds.
One problem that can occur when using insecticides in this way is the development of
insecticide resistance.
Suggest one other reason why some people might be concerned about using
insecticides.
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(iii) Suggest how the effects of insecticide use on a population of Anopheles mosquitoes
could be measured and state the steps that should be taken in order to produce valid
and reliable results.
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[Total: 12]
PhysicsAndMathsTutor.com
(a) State two features of the malarial parasite that indicate that it is not a prokaryote.
1 ................................................................................................................................................
2 .......................................................................................................................................... [2]
(b) In a piece of word-processed homework, a student stated that one species of parasite that
causes malaria is called:
Plasmodium Vivax
State one error made by the student.
...................................................................................................................................................
............................................................................................................................................. [1]
(c) The malarial parasite is carried by an insect, the female Anopheles mosquito.
(i) Describe how the mosquito transmits the malarial parasite to a human.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
..................................................................................................................................... [3]
PhysicsAndMathsTutor.com
, (ii) In order to fight the spread of malaria, insecticides have been used in areas where the
Anopheles mosquito breeds.
One problem that can occur when using insecticides in this way is the development of
insecticide resistance.
Suggest one other reason why some people might be concerned about using
insecticides.
...........................................................................................................................................
...........................................................................................................................................
..................................................................................................................................... [1]
(iii) Suggest how the effects of insecticide use on a population of Anopheles mosquitoes
could be measured and state the steps that should be taken in order to produce valid
and reliable results.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
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[Total: 12]
PhysicsAndMathsTutor.com
